I think both your question and self-response are pertinent. I have nothing to add to either, save a personal intuition that large-scale fully-quantum simulators are probably highly impractical. (I have no particular opinion about partially-quantum simulators — even possibly using quantum subcomponents larger than today’s computers — but they wouldn’t change the substance of my not-in-a-sim argument.)
The other point that comes to mind is that if you have a classical simulation running on a quantum world, maybe that counts as branching for the purposes of where we expect to find ourselves? I’m still somewhat confused about whether exact duplicates ‘count’, but if they do then maybe the branching factor of the underlying reality carries over to sims running further down the stack?
I think both your question and self-response are pertinent. I have nothing to add to either, save a personal intuition that large-scale fully-quantum simulators are probably highly impractical. (I have no particular opinion about partially-quantum simulators — even possibly using quantum subcomponents larger than today’s computers — but they wouldn’t change the substance of my not-in-a-sim argument.)
hm, that intuition seems plausible.
The other point that comes to mind is that if you have a classical simulation running on a quantum world, maybe that counts as branching for the purposes of where we expect to find ourselves? I’m still somewhat confused about whether exact duplicates ‘count’, but if they do then maybe the branching factor of the underlying reality carries over to sims running further down the stack?
It seems to me that exact duplicate timelines don’t “count”, but duplicates that split and/or rejoin do. YMMV.